RF: start refactor Shell Readme
RF: addind data section
RF: add link to git repo
NF: pwd
NF: pwd, format
RF: added cd, touch
NF: added ls examples
NF: formatting ls examples
NF: formatting ls examples
RF: add more to ls
RF: add links to top
RF: add links to top
RF: format links
RF: format links
RF: format links
RF: added wildcard section, first exercise
RF: added wildcard section, edit for lenght
RF: add cat, less, head, tail
RF: less typo
RF: add links